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You don’t have to run a single ring anymore. The TRS Dual Guide will keep your 2X system silently in place on the most demanding rides. The TRS (Trail Security) Dual Guide is designed to fill the expanding Enduro and All-Mountain categories.
Engineered to take extreme punishment dealt by riders on enduro bikes.
Buy E Thirteen XC BSA Threaded TiNi Bottom Bracket from Chain Reaction Cycles, the World's Largest Online Bike Store.